The Anton Hanson Family of Wisconsin

Am looking for descendants of Hans Thomesen Oppeneie and Martha Paulsen Sandeie of Ullensaker, Akershus County, Norway. Eight children were born to them, Karen Hansdatter b. Sept 6, 1834, Maren Hansdatter, b. Feb 28, 1837; Hans Peter Hansen b.Mar 3, 1841; Thea Hansdatter b. Nov 25, 1843; Andreas Hansen, b. Aug 2, 1846; Laurits Hansen b. Mar 22, 1849; Rebecha Hansen b. Dec 26, 1851, and my grandfather Anton Hanson b. June 12, 1854 (all in Ullensaker) My grandfather is the only one of the eight to emigrate to the U.S. so am looking for the descendants of the other seven. Any help is appreciated. I'm a member of the Romerikslagt in Amerika and we're having an annual meeting in September 2001 in Hudson, Wisconsin where members can exchange information and access tapes and films.